The clear-and-present danger test devised by the Supreme Court was designed to define the conditions under which public authorities could A ban obscene materials B suspend habeas corpus protections C mobilize the National Guard D limit free speech E commit troops to situations of potential foreign combat

## Step 1<br />The clear-and-present danger test is a doctrine that was established by the Supreme Court in the case of Schenck v. United States in 1919. This doctrine is used to determine when the government can limit free speech.<br /><br />## Step 2<br />The doctrine states that the government can limit free speech if the speech in question presents a clear and present danger to society. This means that the speech must be such that it could lead to actions that would harm society.<br /><br />## Step 3<br />The doctrine does not apply to the other options provided. It does not pertain to banning obscene materials, suspending habeas corpus protections, mobilizing the National Guard, or committing troops to situations of potential foreign combat.